CN110345768B - Furnace door of thermoforming furnace - Google Patents
Furnace door of thermoforming furnace Download PDFInfo
- Publication number
- CN110345768B CN110345768B CN201910664381.6A CN201910664381A CN110345768B CN 110345768 B CN110345768 B CN 110345768B CN 201910664381 A CN201910664381 A CN 201910664381A CN 110345768 B CN110345768 B CN 110345768B
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- Prior art keywords
- heat
- shaft
- furnace
- door
- fixedly connected
- Prior art date
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- 238000003856 thermoforming Methods 0.000 title claims abstract description 18
- 238000009413 insulation Methods 0.000 claims abstract description 32
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 21
- 239000010959 steel Substances 0.000 claims abstract description 21
- 239000000463 material Substances 0.000 claims abstract description 9
- 239000011094 fiberboard Substances 0.000 claims description 19
- 239000012210 heat-resistant fiber Substances 0.000 claims description 9
- 239000007787 solid Substances 0.000 claims description 4
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 210000001503 joint Anatomy 0.000 claims description 2
- 238000003466 welding Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 claims 1
- 238000010438 heat treatment Methods 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 230000005855 radiation Effects 0.000 abstract description 3
- 239000000919 ceramic Substances 0.000 description 7
- 239000012212 insulator Substances 0.000 description 6
- 238000012423 maintenance Methods 0.000 description 4
- 229910001220 stainless steel Inorganic materials 0.000 description 3
- 239000010935 stainless steel Substances 0.000 description 3
- 230000008646 thermal stress Effects 0.000 description 3
- 239000000945 filler Substances 0.000 description 2
- 238000004321 preservation Methods 0.000 description 2
- 230000037396 body weight Effects 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000035882 stress Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/16—Heating or cooling
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D1/00—Casings; Linings; Walls; Roofs
- F27D1/18—Door frames; Doors, lids, removable covers
- F27D1/1858—Doors
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Furnace Housings, Linings, Walls, And Ceilings (AREA)
- Special Wing (AREA)
Abstract
The invention relates to a furnace door of a thermoforming furnace, wherein the furnace door is rotationally connected to bearing seats on two sides of a furnace body of the thermoforming furnace, the furnace door comprises a door body for closing an inlet or an outlet of the furnace body, and a rotating body fixedly connected with the door body, the rotating body comprises a rotating shaft fixedly connected with the door body, shaft heads connected to two ends of the rotating shaft, the shaft heads at the two ends are respectively rotationally matched with the bearing seats on two sides, the shaft heads are made of heat-resistant steel materials, and a heat insulation mechanism is arranged between the rotating shaft and the shaft heads; the furnace door reduces the heat radiation of the furnace door and improves the heating efficiency of the furnace; the service life of the bearing is prevented from being influenced by high temperature through the heat insulation mechanism, and damage is avoided; avoiding the production stopping time caused by the damage of the furnace door and improving the utilization rate of the furnace.
Description
Technical Field
The invention relates to the field of industrial heat treatment, in particular to a furnace door of a thermoforming furnace.
Background
Hot stamping of steel sheets is a new technology developed in the automotive industry over the last decade, one of the core devices of which is the roll-hearth type thermoforming furnace (PH furnace). The roller hearth furnace is equipped with two furnace doors, one at the inlet end and one at the outlet end. It has an important function of reducing the atmosphere and heat loss in the furnace during charging and discharging. The furnace door of the common thermoforming furnace adopts a heat-resistant steel structure, is opened up and down, has poor heat preservation performance and is easy to deform.
And a structure of adopting a rotary furnace door. The furnace door is made of ceramic materials, and when the material sheet is discharged from the furnace, the furnace door swings open, otherwise, the furnace door is closed. Can effectively reduce the overflow of furnace gas and save energy. The ceramic roller of the furnace door and the ceramic furnace door plate are sintered into a whole, so that the high temperature resistant requirement is met, and the ceramic roller and the ceramic plate are always broken because the ceramic is brittle and cannot bear thermal stress. As long as one part is broken, the whole furnace door is scrapped and cannot be repaired, so that the normal use of the equipment is influenced, the maintenance cost and the maintenance time are increased, and the normal production is influenced.
Disclosure of Invention
The invention aims to solve the technical problem of overcoming the defects in the prior art and providing a furnace door of a thermoforming furnace.
In order to solve the technical problems, the invention adopts the following technical scheme:
The furnace door of the thermoforming furnace is rotationally connected to bearing seats on two sides of a furnace body of the thermoforming furnace, the furnace door comprises a door body for closing an inlet or an outlet of the furnace body and a rotating body fixedly connected with the door body, the rotating body comprises a rotating shaft fixedly connected with the door body and shaft heads connected to two ends of the rotating shaft, the shaft heads at two ends are respectively installed in a rotating fit with the bearing seats on two sides, and the shaft heads are made of heat-resistant steel materials and a heat insulation mechanism is arranged between the rotating shaft and the shaft heads.
Preferably, the stub shaft is detachably connected to the rotational shaft.
Preferably, the insulating mechanism includes an insulating mat assembly that is baffled between the stub shaft and the rotational shaft.
Preferably, the shaft head is provided with an open cavity, the rotating shaft comprises a shaft body and end plug bodies fixedly connected to two ends of the shaft body, the end plug bodies are inserted into the inner periphery of the open cavity, and the heat insulation assembly comprises a first heat insulation pad which is blocked between the end face of the end plug bodies and the cavity bottom face of the open cavity, and a second heat insulation pad which is blocked between the peripheral face of the end plug bodies and the cavity wall of the open cavity.
Preferably, the heat insulating assembly further comprises a third heat insulating pad provided between the stub shaft and the end of the shaft body that is adjacent to each other.
Preferably, the shaft body includes a heat-resistant steel pipe and a heat insulator filled in an inner periphery of the heat-resistant steel pipe. The insulator is a plug blanket filler.
Preferably, the door body includes a heat-resistant fiberboard and a support plate assembly fixedly coupled to a side of the heat-resistant fiberboard.
Preferably, the support plate assembly includes a first guard plate fixedly connected to one side surface of the heat-resistant fiberboard, and a second guard plate fixedly connected to the other side surface of the heat-resistant fiberboard and bent to the bottom side of the heat-resistant fiberboard.
Preferably, the first guard plate is fixedly connected to one side, close to the rotating shaft, of the surface of one side of the heat-resistant fiber board, and the coverage area of the first guard plate is 1/3-1/2 of the surface area of one side of the heat-resistant fiber board.
Preferably, the first guard plate and the second guard plate are made of 310 stainless steel.
Preferably, the door body has a plurality of door bodies, and the plurality of door bodies are sequentially and alternately distributed along the extending direction of the rotating body. The deformation of the door body caused by thermal stress is effectively prevented.
Due to the application of the technical scheme, compared with the prior art, the invention has the following advantages:
According to the furnace door of the thermoforming furnace, the door body and the rotating shaft are divided into two parts, and a certain part can be replaced and repaired after being damaged, so that the use cost is reduced, and the maintenance time is shortened; the rotating body consists of a rotating shaft and a shaft head, and the shaft head is made of heat-resistant steel materials, so that the situation of fracture of the rotating shaft is avoided, the advantage of swinging the furnace door is maintained, and the problem of fracture of the ceramic furnace door is solved;
The furnace door reduces the heat radiation of the furnace door and improves the heating efficiency of the furnace; the service life of the bearing is prevented from being influenced by high temperature through the heat insulation mechanism, and damage is avoided; avoiding the production stopping time caused by the damage of the furnace door and improving the utilization rate of the furnace.
Drawings
FIG. 1 is a schematic view of the front view of the oven door of the present invention;
FIG. 2 is a schematic view of the cross-sectional structure of the A-A direction in FIG. 1;
FIG. 3 is an enlarged schematic view of the structure of FIG. 1 at T;
Wherein: 100. a door body; 201. a rotating shaft; 202. a shaft head; 10. a heat resistant fiberboard; 11. a first guard plate; 12. a second guard plate; 20. an end plug body; 21. a heat-resistant steel pipe; 22. an insulator; 31. a first insulation mat; 32. a second insulation mat; 33. and a third heat insulation pad.
Detailed Description
The technical scheme of the invention is further described below with reference to the accompanying drawings and the specific embodiments.
As shown in fig. 1, 2 and 3, a furnace door of a thermoforming furnace, the furnace door is rotationally connected to bearing seats on two sides of a furnace body of the thermoforming furnace, the furnace door comprises a door body 100 for closing an inlet or an outlet of the furnace body, and a rotator fixedly connected with the door body 100, the rotator comprises a rotating shaft 201 fixedly connected with the door body 100, shaft heads 202 detachably connected to two ends of the rotating shaft 201, the shaft heads 202 at two ends are respectively and rotatably matched with the bearing seats on two sides, the shaft heads 202 are made of heat-resistant steel materials, a heat insulation mechanism is arranged between the rotating shaft 201 and the shaft heads 202, and the heat insulation mechanism comprises a heat insulation pad assembly which is blocked between the shaft heads 202 and the rotating shaft 201.
Specifically, the shaft head 202 is formed with an open cavity, one side of the shaft head 202 is a solid cylinder which is matched with the bearing seat to be in rotary butt joint installation, the other side is a hollow cylinder with the radius larger than that of the solid cylinder, the open cavity is formed on the hollow cylinder,
The rotation shaft 201 comprises a shaft body and end plug bodies 20 fixedly connected to two ends of the shaft body, the end plug bodies 20 are inserted into the inner periphery of the open cavity, and the heat insulation assembly comprises a first heat insulation pad 31, a second heat insulation pad 32 and a third heat insulation pad 33, wherein the first heat insulation pad 31 is blocked between the end face of the end plug bodies 20 and the bottom face of the open cavity, the second heat insulation pad 32 is blocked between the peripheral face of the end plug bodies 20 and the cavity wall of the open cavity, and the third heat insulation pad 33 is arranged between the shaft head 202 and the end part, close to the shaft body, of the shaft body.
The end plug body 20 is made of 45# steel, one end of the end plug body is plugged at the inner periphery of the shaft body, the other end plug is fixedly connected with the shaft body in an opening cavity in a welding mode, the end plug body is detachably connected with the shaft head 202 through bolts (the bolts penetrate through the first heat insulation pad 31 and are then locked on the end plug body 20), the rotating shaft 201 and the shaft head 202 can be blocked in an omnibearing manner through the first heat insulation pad 31, the second heat insulation pad 32 and the third heat insulation pad 33, so that the high-temperature rotating shaft 201 is prevented from transmitting heat to the shaft head 202, and further heat is prevented from being transmitted to a bearing seat on a furnace body, the bearing seat can be used for a long time in a non-high-temperature state, the service life of the bearing is prevented from being influenced, and the bearing is prevented from being damaged by high temperature.
In this example, the shaft body includes a heat-resistant steel pipe 21 (310 stainless steel material) and a heat insulator 22 filled in the inner periphery of the heat-resistant steel pipe 21. The heat insulator 22 is a plug blanket filler, and the heat-resistant steel pipe 21 has substantially the same thermal expansion coefficient as the furnace body steel structure, and does not generate a large internal stress. And have sufficient yield strength, also can not appear breaking at high temperature, the axle body comprises heat-resisting steel pipe 21 and insulator 22 two parts, can avoid more heat transfer to end plug body 20 on, and then further avoid the bearing frame to receive strong high temperature influence, also reduce axle body weight simultaneously.
Further, the door body 100 includes the heat-resistant fiberboard 10 and a support plate assembly fixedly coupled to a side of the heat-resistant fiberboard 10. In this example, the door body 100 has a plurality of door bodies 100, and the plurality of door bodies 100 are sequentially and alternately distributed along the extending direction of the rotating body, so as to effectively prevent the deformation of the door body 100 caused by thermal stress.
Specifically, the support plate assembly includes a first guard plate 11 fixedly connected to one side surface of the heat-resistant fiberboard 10, and a second guard plate 12 fixedly connected to the other side surface of the heat-resistant fiberboard 10 and bent to the bottom side of the heat-resistant fiberboard 10, and the first guard plate 11 and the second guard plate 12 are made of 310 stainless steel. The door body 100 adopts the cooperation setting of heat-resisting fiberboard 10 and backup pad subassembly, and not the steel body of adoption entirely, can avoid the poor problem of heat preservation performance of all steel body, still can greatly reduced door body 100 weight, alleviateed the furnace gate dead weight, just so greatly reduced the fracture probability that leads to the door shaft body because of furnace body shell warp, improve life cycle, the cost is reduced.
The first guard plate 11 is fixedly connected to one side of the surface of one side of the heat-resistant fiber board 10, which is close to the rotating shaft 201, and the coverage area of the first guard plate 11 is 1/3-1/2 of the surface area of one side of the heat-resistant fiber board 10. The first guard plate 11 and the second guard plate 12 provide support and protection for the heat-resistant fiber board 10, wherein the surface of the second guard plate 12 is a side surface close to the furnace chamber when the furnace door is closed, and the second guard plate 12 can prevent the workpiece from being in contact with the heat-resistant fiber board 10 when the workpiece is in contact with the furnace door, so that the heat-resistant fiber board 10 is prevented from being damaged after being collided; wherein the first guard plate 11 does not entirely cover the surface of the heat-resistant fiberboard 10, and the uncovered portions, except for the reduced material consumption, are exposed to the outside of the heat-resistant fiberboard 10, which can enhance the heat dissipation performance thereof.
In summary, the furnace door of the thermoforming furnace disclosed by the invention is divided into two parts, namely the door body and the rotating shaft, so that a certain part can be replaced and repaired after being damaged, the use cost is reduced, and the maintenance time is shortened; the rotating body consists of a rotating shaft and a shaft head, and the shaft head is made of heat-resistant steel materials, so that the situation of fracture of the rotating shaft is avoided, the advantage of swinging the furnace door is maintained, and the problem of fracture of the ceramic furnace door is solved;
The furnace door reduces the heat radiation of the furnace door and improves the heating efficiency of the furnace; the service life of the bearing is prevented from being influenced by high temperature through the heat insulation mechanism, and damage is avoided; avoiding the production stopping time caused by the damage of the furnace door and improving the utilization rate of the furnace.
The present invention has been described in detail with the purpose of enabling those skilled in the art to understand and practice the present invention, but not to limit the scope of the present invention, and the present invention is not limited to the above-described embodiments, and all equivalent changes or modifications according to the spirit of the present invention should be covered in the scope of the present invention.
Claims (3)
1. A door of a thermoforming oven rotatably coupled to bearing blocks on both sides of an oven body of the thermoforming oven, the door comprising:
the door body is used for closing the inlet or the outlet of the furnace body and comprises a heat-resistant fiber board and a supporting plate assembly fixedly connected to the side surface of the heat-resistant fiber board;
The rotating body is fixedly connected with the door body and comprises a rotating shaft fixedly connected with the door body and shaft heads connected to two ends of the rotating shaft, the shaft heads are made of heat-resistant steel materials, and the shaft heads at two ends are respectively installed in a rotating fit with the bearing seats at two sides;
The method is characterized in that:
The support plate assembly comprises a first guard plate fixedly connected to one side surface of the heat-resistant fiberboard and a second guard plate fixedly connected to the other side surface of the heat-resistant fiberboard and bent to the bottom side of the heat-resistant fiberboard, the first guard plate is fixedly connected to one side of one side surface of the heat-resistant fiberboard, which is close to the rotating shaft, the coverage area of the first guard plate is 1/3-1/2 of the surface area of one side of the heat-resistant fiberboard, and the surface of the second guard plate is a side surface, which is close to the furnace chamber, when the furnace door is closed;
The shaft head is detachably connected to the rotating shaft, an opening cavity is formed in the shaft head, one side of the shaft head is a solid cylinder which is matched with the bearing seat to rotate and is in butt joint, the other side of the shaft head is a hollow cylinder with the radius larger than that of the solid cylinder, the opening cavity is formed in the hollow cylinder, the rotating shaft comprises a shaft body and end plug bodies fixedly connected to two ends of the shaft body, the shaft body comprises a heat-resistant steel pipe and a heat-insulating body filled in the inner periphery of the heat-resistant steel pipe, one end of the end plug body is plugged in the inner periphery of the shaft body and is fixedly connected with the shaft body in a welding mode, and the other end plug is in the inner periphery of the opening cavity;
The heat insulation mechanism comprises a heat insulation pad assembly which is blocked between the shaft head and the rotating shaft, wherein the heat insulation pad assembly comprises a first heat insulation pad which is blocked between the end plug end face and the cavity bottom face of the opening cavity, a second heat insulation pad which is blocked between the peripheral face of the end plug body and the cavity wall of the opening cavity, and a third heat insulation pad which is arranged between the shaft head and the end part of the shaft body, which is close to each other.
2. The oven door of the thermoforming oven of claim 1, wherein: the end plug body is detachably connected with the shaft head through bolts, and the bolts penetrate through the first heat insulation pad and are then locked and attached to the end plug body.
3. The oven door of the thermoforming oven of claim 1, wherein: the door body has the polylith, and the polylith the door body is along the extending direction interval distribution in proper order of rotor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910664381.6A CN110345768B (en) | 2019-07-23 | 2019-07-23 | Furnace door of thermoforming furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910664381.6A CN110345768B (en) | 2019-07-23 | 2019-07-23 | Furnace door of thermoforming furnace |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110345768A CN110345768A (en) | 2019-10-18 |
| CN110345768B true CN110345768B (en) | 2024-06-14 |
Family
ID=68179794
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910664381.6A Active CN110345768B (en) | 2019-07-23 | 2019-07-23 | Furnace door of thermoforming furnace |
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| Country | Link |
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| CN (1) | CN110345768B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113758270A (en) * | 2021-09-13 | 2021-12-07 | 沈阳华天航空机械有限公司 | Thermal forming furnace external heat preservation system |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203132337U (en) * | 2013-03-04 | 2013-08-14 | 中国兵器工业新技术推广研究所 | Furnace roller of roller bottom type thermal treatment furnace with internal heat insulation device |
| CN206177024U (en) * | 2016-11-04 | 2017-05-17 | 苏州炬鼎工业炉有限公司 | Furnace door sealing device |
| CN210292840U (en) * | 2019-07-23 | 2020-04-10 | 艾伯纳工业炉(太仓)有限公司 | Furnace door of thermal forming furnace |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203904393U (en) * | 2014-06-16 | 2014-10-29 | 中冶京诚(扬州)冶金科技产业有限公司 | Water-cooling-free deformation-resistant furnace roller |
| CN105861808A (en) * | 2016-05-18 | 2016-08-17 | 无锡华精新材股份有限公司 | Furnace roller for tunnel type furnace kiln |
| CN109837372A (en) * | 2019-02-25 | 2019-06-04 | 杭州易正科技有限公司 | A kind of mobile sealing door of vacuum heat treatment furnace |
-
2019
- 2019-07-23 CN CN201910664381.6A patent/CN110345768B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203132337U (en) * | 2013-03-04 | 2013-08-14 | 中国兵器工业新技术推广研究所 | Furnace roller of roller bottom type thermal treatment furnace with internal heat insulation device |
| CN206177024U (en) * | 2016-11-04 | 2017-05-17 | 苏州炬鼎工业炉有限公司 | Furnace door sealing device |
| CN210292840U (en) * | 2019-07-23 | 2020-04-10 | 艾伯纳工业炉(太仓)有限公司 | Furnace door of thermal forming furnace |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110345768A (en) | 2019-10-18 |
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